Senior Linux System Administrator

MANTECH seeks a motivated, career-driven, and customer-focused Senior Linux and VMWare System Administrator to join our team in Laurel, MD . This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO's Enterprise Information Technology (EIT), the foundation for enterprise-wide services. As a Senior System Administrator, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. Responsibilities include, but are not limited to: Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis, and resolution of problems. Provide support to IT systems including day-to-day operations, monitoring & problem resolution for all the client/server/storage/network devices, etc. Configure and manage Linux, and possibly Windows operating systems, installs/loads operating system software and patches to maintain security compliance, troubleshoot, maintain integrity of and configure network components, along with implementing operating system enhancements to improve reliability & performance. Patching and updating Linux distributions regarding security findings. Adding/Removing users and setting permissions to meet certain user privileges. Working with STIGs and fixing/updating vulnerabilities with STE/STN findings. Renew Linux server certificates and applying updates to TLS security versions. Working with automation software such as ANSIBLE to streamline updates and patching.

Minimum Qualifications:

Bachelor's degree with 12+ years of relevant System Administration experience OR Associates degree with 15 years of relevant System Administration experience Senior level Linux Systems Administration experience is required Experience with VMWARE, vSphere, VCF (VMware Cloud Foundations) Server and Hardware maintenance Knowledge of patching & updating Linux distributions regarding security findings.

Preferred Qualifications:

20 years of relevant System Administration experience (no degree requirement) Experience with Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis, and resolution of problems. Experience with monitoring tools like NAGIOS.

Clearance Requirements:

Must possess and maintain a current/active TS/SCI clearance with

Polygraph Physical Requirements:

Must be able to remain in a stationary position 50% of the time Occasionally moves about inside the office to access file cabinets, office machinery, etc. Frequently communicate with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations